Setting fixture



Sept. 19, 1967 J. SUNNEN 3,341,948

SETTING FIXTURE Filed Dec. 10, 1964 3 Sheets-Sheet 1 F l G ,3 wz/vrazs M0552 jam/4 Sept. 19, 1967 J. SUNNEN 3,341,948

SETTING FIXTURE Filed Dec. 10, 1964 I5 Sheets-Sheet 2 B%4KW Sept. 19, 1""

J. SUNNEN 3,341,948

SETTING FIXTURE Filed Dec. 10, 1964 3 Sheets-Sheet 5 Ivar/men 3,341,948 SETTING FIXTURE Joseph Sunnen, 400 S. Warson Road, Clayton, Mo. 63105 Filed Dec. 10, 1964, Ser. No. 417,425 11 Claims. (Cl. 33-185) ABSTRACT OF THE DISCLOSURE A fixture for establishing the operating position for the guide and wear members on honing machines. The fixture includes two movable members which are moved by the action of a screw having oppositely threaded portions, and blocks on the movable members adjustable simultaneously with the adjustment of the movable members, the blocks also having gauging surfaces which engage the wear member on the honing machine, whereby the wear member can be automatically adjusted for honing taking into account the size of the surface to be honed and the condition of the wear element to be adjusted, and a scale associated with the block members calibrated to vary in a predetermined relationship with the movable members.

The subject invention relates to setting fixtures and the like and more particularly to a fixture for establishing the best possible operating positions for the guide and wear members on honing machines and like devices.

Honing and similar tools, particularly those which operate on cylindrical surfaces often have one or more guide members in addition to the abrasive members which engage the surfaces being worked on. The usual machine adjustments, however, are not ordinarily sulficient to maintain the operating members including the abrasive members and the guides in operative engagement with the work over the full range of surface diameters the machine is called upon to hone, and also automatically compensate for Wear of the work engaging members. It is therefore frequently necessary to initially adjust the positions of the work engaging members on the machine or tool so that the machine will be able to operate within its best operating range. It has not heretofore been proposed, so far as known, to provide a fixture such as the present fixture for predeterminately accurately adjusting the initial operating positions of the operating members on a honing or like machine so that the operating members will have the best possible operating positions and so that the machine itself will have a full range of operating adjustment. The present invention overcomes these and other shortcomings of the prior art by providing a relatively simple fixture which includes means for establishing the best possible operating positions for the operative members of a honing or like machine regardless of the diameter of the surface to be operated on while automatically compensating for the amount of wear of the work engaging elements. While the subject fixture is disclosed in conjunction with a machine for honing internal cylindrical surfaces it has many other possible applications and uses as well.

It is, therefore, a principal object of the present invention to provide a fixture for accurately presetting the work engaging elements of a honing or similar machine.

Another object is to provide a relatively inexpensive fixture which requires little or no training or experience to operate.

Another object is to provide means for accurately setting the operating components of honing and machining devices to take advantage of the maximum possible operating range of the machine and to establish the most desirable operating positions for the components.

Another object is to minimize the time required to pre- United States Patent 3,341,948 Patented Sept. 19, 1967 pare a honing and machining device for a particular operation.

Another object is to increase the efliciency of honing devices and the like and to extend the life of the principal wear components.

Another object is to increase the accuracy of honing devices and the like.

Another object is to improve the wear characteristics of the operating elements of honing, abrading and similar devices.

These and other objects and advantages of the present invention will become apparent after considering the fol lowing specification in conjunction with the accompanying drawings, wherein:

FIG. 1 is a side elevational view, partly in section, showing a fixture constructed according to the present invention, said fixture being shown positioned in operative engagement with a cylindrical surface;

. FIG. 2 is a top plan view, partly in section, of the fixture of FIG. 1;

FIG. 3 is a right end view of the fixture in FIG. 1;

FIG. 4 is a cross sectional view taken on line 44 of FIG. 3 and showing a guide member for a honing mandrel being adjusted therein;

FIG. 5 is a side elevation-a1 view of the same fixture with a different kind of honing guide member positioned .therein; I

2 FIG. 6 is a cross-sectional elevational view taken on line 66 of FIG. 4;

FIG. 7 is a top plan view of a modified fixture construction; and

FIG. 8 is a side elevational view, partly in section, of the modified fixture of FIG. 7.

Referring to the drawings by reference numbers, number 10 refers to a fixture constructed according to the present invention, and designed particularly for pre-adjusting and setting the guide elements employed on a honing mandrel or the like. Guide elements of the general type to be set by the subject fixture are disclosed in copending Sunnen patent applications Ser. Nos. 329,013, no'w Patent 3,216,155, and 349,892 filed Mar. 6, 1964 and are also shown in FIGS. 4 and 5 hereof.

' The fixture 10 includes an elongated body 12 which is rectangular in shape and has two spaced side portions per se as shown \14 and 16 (FIGS. 2 and 6) which are connected adjacent their upper edges by a web portion18. The ends of the side portions 14 and 16 are also connected by end plates 20 and 22 which are attached thereto by suitable threaded members such as screws 24. The two end plates 20 and 22 have aligned bores 26 and 28 respectively (FIG. 4) which rotatably receive end portions 30 and 32 respectively of a shaft 34. The shaft 34 has two oppositely threaded portions 36 and 38 separated near the middle by a non-threaded portion 40. The shaft 34 extends through and beyond the end plate 22 and knob 42 is secured thereon by set screw 44.

Two movable members 46 and 48 are positioned in the space between the body side wall portions 14 and 16. The member 46 is threadedly engaged with the threaded shaft portion 36 and the member 48 is threadedly engaged with the oppositely threaded shaft portion 38. The movable members 46 and 48 therefore move in opposite directions to vary the spacing therebetween whenever the knob 42 is rotated. The movable member 46 is provided with a recess 50 adjacent its lower outer edge in which is positioned an annular gage member 52. The gage member 52 is preferably hardened to resist Wear and is maintained in position in the recess 50 by means of threaded member 54. The movable member 48 has a similar recess 56 which also receives an annular gage member 58 held in position therein by threaded member 60. The two gage members 52 and 58 are so positioned that they will engage opposite sides of a cylindrical surface 62 in a workpiece 64 as shown in FIGS. 1 and 2. The workpiece 64 may be an engine block or any other member having a bore to be honed. The subject fixture can also be used to adjust devices other than honing devices and with some modification it can be used for external as well as internal surfaces. To adjust the fixture 10 the knob 42 is rotated to vary the space between the gage members 52 and 58 until they engage opposite sides of the cylinder surface 62.

A fixed block 66 is attached by screws 68 to the top side of the fixture body 12 opposite from the movable members 46 and 48. The fixed block 66 has two accurately formed gaging surfaces 70 and 72 (FIG. 1) machined thereon for reasons that will be shown. The movable member 48 has an upwardly extending portion 74 that projects upwardly between the spaced body portions 14 and 16 through an elongated slot 76 (FIG. 2). The upwardly extending portion 74 has a threaded passage 77 (FIG. 4) therethrough which receives a threaded member 78. The member 78 has a flat headed portion 80 on one end and is locked in position on the portion 74 by a lock nut 82 which can be factory or field adjusted.

The fixture 10 is specifically constructed for adjusting the guide or wear shoe assemblies employed on honing devices and the like such as the guide assemblies disclosed in copending Sunnen applications Serial Nos. 329,013 and 349,892. It is not intended to limit the subject fixture to this particular use, however, since it can also be used to adjust the stone assemblies and other similar assemblies employed on honing as well as other devices. The basic device, therefore, has broad application.

FIG. 4 shows the subject fixture being used to adjust an auxiliary guide assembly 100 for a honing device, which assembly includes a pair of spaced mounting pins 102 (only one being shown) that are adapted to be positioned in cooperating bores in a honing device or head. The guide assembly 100 has a guide shoe portion 104 formed of a relatively soft material for engaging a surface being honed, and the shoe portion 104 is mounted on a rigid backing member 106. The backing 106 is pivotally mounted on reduced diameter end portions 102a of the mounting pins 102 and is biased to the position shown by a relatively strong spring member 107. The guide assembly includes an adjustable slide assembly 108 which is mounted on the pins 102 and has two spaced members 1110 and 112 which are clamped on the pins 102 by means of a threaded member 114.

One purpose of the subject setting fixture 10 is to enable quick and accurate adjustment of the assembly 108 on the mounting pins 102. This is done so that when the guide assembly 100 is installed in operative position on a honing device the shoe portion 104 will have the most desirable operating position for the size of cylinder 62 to be honed. To adjust the position of the assembly 108, the fixture '10 is first positioned as shown in FIGS. 1 and 2 and the knob 42 adjusted so that the gage members 52 and 58 engage opposite sides of a cylinder to be honed. After this is done and while the fixture is so positioned the guide assembly 100 is positioned on the fixture as shown in FIG. 4 with the shoe 104 engaging the head portion 80 of the threaded member 78 and with the threaded member 114 loosened so that the assembly 108 can be slid along the pins 102 into abutment with the surface 70 on the fixed member 66. The threaded member 114 is then tightened to lock the assembly 108 on the pins i102. The guide assembly 100 is now adjusted and ready for installing on a honing device. The guide assembly 100 is primarily a stabilizing guide and not a supporting or backing guide for the abrasive members.

FIG. shows the same fixture being used to adjust another kind of guide assembly 120 employed on a honing device. In this case, the guide assembly 120 is used for maintaining the abrasive members in'operating engagement with the work and for this purpose the guide needs to be more rigidly supported. The guide assembly includes a guide shoe 122 formed of relatively soft material, a mounting member 124 for the guide shoe 122, and a pair of spaced mounting pins 126 which slide into cooperating holes (not shown) in a honing device. The guide assembly 120 is adjusted while the fixture '10 is still positioned having its gage members 52 and 58 engaged with opposite sides of the cylinder 62. Since the assembly 120 must provide relatively substantial positioning support for the abrasive members during honing it is adjusted by adding shims 128 of substantially the same shape as the mounting or backing member 124. The shims 128 have suitable holes for mounting them on the pins 126, and shims are added to fill up the space between the mounting member 124 and the gaging surface 72 on the fixed member 66. The number and thickness of the shims to be added depends upon the amount of space to be filled which in turn is determined by the diameter of the cylindrical surface. It is not usually necessary that the assemblies 120 be adjusted to extreme accuracy but it is desirable to have the guide assemblies 120 relatively accurate in order to produce the best possible operating condition and the widest possible range of adjustment therefor. These conditions depend on the head being relatively accurately centered in a hole being honed.

It has been found preferable to have the work engaging surfaces of the gage members 52 and 58 cylindrical and parallel or nearly parallel so that they will engage a surface to be honed along substantially their full lengths. It is contemplated, however, to provide a slight angle or cant between the gage members 52 and 58 or to form them in different shapes to prevent sticking and binding and to facilitate removal of the fixture from a cylinder. If the gage members are angularly related or canted, the cant angle should be relatively small to prevent the fixture from lifting up or jumping out of the cylinder when pressure is applied by the knob 42.

FIGS. 7 and 8 show a modified form of fixture used for the same or similar purposes. The modified fixture 150 differs from the fixture 10 because it includes indicator means to register the total shim thickness required. The modified fixture therefore does not require the trial and error technique of testing different numbers and thicknesses of shims until the right total thickness is obtained as described above. Instead the modified fixture provides a reading of the total shim thickness required and the operator merely selects shims to equal this total. Certain parts of the modified fixture 150, which correspond to parts on the fixture 10, are identified by the same numbers increased by 100.

The modified fixture has a threaded shaft 134 similar to the shaft 34 with oppositely threaded portions 136 and 138. The threaded portion 136 cooperates with a movable slide member 146 and the threaded portion 138 cooperates with another slide member 148. The slide 146 has an annular gage member 152 of a hard material for engaging one side of a surface to be gaged, and the slide 148 has a similar annular member 158 for engaging the opposite side of the same surface. The gage members 152 and 158 are similar to the gage members 52 and 58 (FIG. 4) but are larger in diameter and therefore have a longer life expectancy. It also has been found desirable to lock one of the gage members and allow the other to rotate. The locked member should be repositioned periodically, however, to provide a new gage surface.

A fixed member 160 is attached to the upper surface of the fixture 150 and is provided with a transverse rectangular groove 162 across its top. A cover plate 164 is attached to the top of the member 160 by screws 166 to close the groove 162.

A movable scale member 168 is slidably positioned extending through the groove 162, and has a graduated scale 170 calibrated along one side to indicate the total shim thickness required for a particular assembly when honing in a particular diameter bore. The scale 170 moves adjacent to a scribe line 172 on the member 160 which is visible through an opening 174 in the cover plate 164. The movable member 168 also has a groove or track 176 formed at an angle in its undersurface as shown dotted in FIG. 7. The groove 176 cooperates with an upwardly extending projection 178 formed on another movable member 180 that slides in a passage in the member 160 at right angles to the groove 162. Cross members 182 are also attached adjacent to the ends of the movable member 168 to prevent it from coming out of the groove 162.

When the modified setting fixture 150 is positioned with its gage members 152 and 158 engaging opposite sides of a surface to be honed, a guide assembly 184 to be adjusted (similar to guide assembly 120) is positioned thereon as shown in FIG. 8 with its wear portion 186 abutting a surface 188 on an upwardly extending portion 190 of the movable member 148. The .guide assembly 184 also includes a mounting member 192 on which the wear shoe 186 is mounted, and mounting pins 194. The assembly 184 is adjusted by moving the movable member 168 rearwardly in the groove 162 until the member 180 engages the backing member 192 (see dotted lines in FIG. 8). This takes place because of the sliding connection between the projection 178 on the member 180 and the groove 176. When this occurs the scale reading opposite the scribe line 172 indicates the total shim thickness required to be added to the guide assembly 184 to produce the most desirable operating condition taking into account the diameter of the surface to be honed and the wear on the guide shoe 186. The guide assembly can now be removed from the fixture and the proper shims added as required without retesting the assembly in the fixture. A set of shims will preferably include shims of different thicknesses which can be combined to produce any desired total thickness.

It is to be noted that the subject fixtures can be used to adjust the guide assemblies regardless of the amount of wear thereto and regardless of the size of bore to be honed. Furthermore, once the guide assemblies are properly adjusted they will also be in their most desirable conditions for honing. That is to say, the honing machine will then have a full range of adjustment taking into account the wear on the various parts and the dimensions of the work to be honed.

Other means can also be used to determine the total shim thickness required. For example, a circular dial (not shown) connected by cam or gear means can be used to move a member similar to the member 180 without departing from the spirit or scope of the invention.

The same or a similar type fixture can also be used to establish particular operating conditions for the abrasive or stone assemblies as well as the guide assemblies and the subject fixture can be used to adjust the work engaging elements on other devices such as machining and grinding devices.

Thus there has been shown and described several embodiments of a novel fixture particularly suited for accurately adjusting the operating elements of honing or similar devices, which fixture fulfills all of the objects and advantages sought therefor. Many changes, modifications, alterations, variations and other uses and applications of the subject fixture will, however, become apparent to those skilled in the art after considering this specification and the accompanying drawings. All such changes, modifications, alterations, variations and other uses and applications which do not depart from the spirit and scope of the invention are deemed to be covered by the invention which is limited only by the claims which follow.

What is claimed is:

1. Means for adjusting the wear elements on honing and like devices comprising a fixture having a pair of spaced gage members for engaging a surface to be honed, means for adjusting the spacing between said gage members so that they engage opposite sides of a cylindrical surface to be honed, means associated with one of said gage members forming a first abutment, means on the fixture forming a second abutment spaced from the first abutment, means for positioning a wear element to be adjusted on said fixture, said wear element having relatively movable portions engageable respectively with said first and second abutments, the distance between said first and second abutments being calibrated with the spacing of the gage members to provide accurate adjustment of the wear element for every setting of the gage members.

2. A fixture for adjusting operating elements employed on internal honing devices and the like comprising a pair of relatively movable gage members having spaced work engaging elements thereon, means for adjusting the space between said gage members whereby said members engage opposite sides of an internal surface to be honed, means associated with one of said gage members defining a first abutment surface, means on the fixture defining a second abutment surface spaced from the first abutment surface, the space between said abutment surfaces being calibrated to vary in a predetermined relationship with .gage members, means on the fixture for positioning an operating element to be adjusted with the operating element abutting one of said abutment surfaces, means associated with the other abutment surface engageable with said operating element to provide means directly usable to adjust the operating element for use on a honing machine or the like for honing internal surfaces of the size engaged by the gage members.

3. The fixture defined in claim 2 including a fixture body, one of said spaced abutment surfaces being positioned on said body.

4. The fixture defined on claim 2 wherein said gage members have annular work engaging elements at least one of which is rotatable on its associated gage member.

5. The fixture defined in claim 4 wherein at least one of said work engaging elements has a cylindrical outer surface.

6. The fixture defined in claim 4 wherein both of said work engaging elements have cylindrical outer surfaces, said cylindrical outer surfaces being arranged in spaced parallel relationship.

7. The fixture defined in claim 4 wherein said work engaging elements have work engaging outer surfaces Which are angularly related each to the other.

8. A fixture for use in adjusting work engaging elements employed on a device for operating on internal surfaces comprising a frame having a rotatable member extending therethrough, said member having oppositely threaded portions and means for rotating same, first and second relatively movable members threadedly engaged respectively with said oppositely threaded portions, a gage element on each of said relatively movable members for engaging opposite sides of an internal surface, means on one of said relatively movable members forming a first abutment surface, other means on the fixture forming a second abutment surface spaced from said first abutment surface, the space between said first and second abutment surfaces being calibrated to have a particular relationship to the spacing between the gage elements for all positions thereof, and means for relating the space between said abutment surfaces to a work engaging element for adjustin same, said last named means including means for positioning a work engaging element to be adjusted on said fixture in abutment with a least one of said abutment surfaces.

9. The fixture defined in claim 8 wherein said means for relating the space between said abutment surfaces includes scale means calibrated to measure said space in terms of the adjustment required for adjusting a work engaging element.

10. A fixture for use in adjusting work engaging elements employed on a device for operating on internal surfaces comprising a frame having a rotatable member extending therethrough, said member having oppositely threaded portions and means for rotating same, first and second relatively movable members threadedly engaged respectively with said oppositely threaded portions, a gage element on each of said relatively movable members for engaging opposite sides of an internal surface, means on one of said relatively movable members forming a first abutment surface, other means on the fixture forming a second abutment surface spaced from said first abutment surface, the space between said first and second abutment surfaces being calibrated to have a particular relationship to the spacing between the gage elements for all positions thereof, and means for relating the space between said abutment surfaces to a work engaging element for adjusting the same, said last named means including scale means calibrated to measure the space between said abutment surfaces in terms of the adjustment required for adjusting a work engaging element, said scale means including a plunger movable across the space between said abutment surfaces, and means cooperatively engageable with said plunger to indicate the position thereof.

11. Means for adjusting wear elements on honing and 20 to be honed, means associated with one of said gage members forming a first abutment, means on the fixture forming a second abutment spaced from the first abutment, means for positioning a wear element to be adjusted on said fixture in abutment with one of said spaced abutments, indicator means associated with the other of said spaced abutments including means movable into engagement with the wear element opposite from said one abutment, said indicator means including means calibrated to indicate the amount of adjustment required for the wear element for every position of the movable gage members.

References Cited UNITED STATES PATENTS 2,599,835 6/1952 Johnson et a1 33-181 X 3,026,624 3/1962 Clay 33191 3,054,189 9/1962 Coulson 33-147 FOREIGN PATENTS 169,748 9/ 1934 Switzerland.

LEONARD FORMAN, Primary Examiner.

WILLIAM D. MARTIN, JR., Assistant Examinen 

1. MEANS FOR ADJUSTING THE WEAR ELEMENTS ON HONING AND LIKE DEVICES COMPRISING A FIXTURE HAVING A PAIR OF SPACED GAGE MEMBERS FOR ENGAGING A SURFACE TO BE HONED, MEANS FOR ADJUSTING THE SPACING BETWEEN SAID GAGE MEMBERS SO THAT THEY ENGAGE OPPPOSITE SIDES OF A CYLINDRICAL SURFACE TO BE HONED, MEANS ASSOCIATED WITH ONE OF SAID GAGE MEMBERS FORMING A FIRST ABUTMENT, MEANS ON THE FIXTURE FORMING A SECOND ABUTMENT SPACED FROM THE FIRST ABUTMENT, MEANS FOR POSITIONING A WEAR ELEMENT TO BE ADJUSTED ON SAID FIXTURE, SAID WEAR ELEMENT HAVING RELATIVELY MOVABLE PORTIONS ENGAGEABLE RESPECTIVELY WITH SAID FIRST AND SECOND ABUTMENTS, THE DISTANCE BETWEEN SAID FIRST AND SECOND ABUTMENTS BEING CALIBRATED WITH THE SPACING OF THE GAGE MEMBERS TO PROVIDE ACCURATE ADJUSTMENT OF THE WEAR ELEMENT FOR EVERY SETTING OF THE GAGE MEMBERS. 